NON-ISOLATED UNIVERSAL ON-BOARD BATTERY CHARGER WITH WIDE OUTPUT VOLTAGE RANGE FOR E-TRANSPORTATION

Abstract

The expansion of portable electronic gadgets across multiple industries necessitates the use of efficient battery charging methods. A non-isolated global onboard battery charger with a broad output voltage range is shown in this abstract. The charger’s versatile design accommodates a range of battery chemists and voltage requirements, meeting the varying needs of contemporary gadgets. In electric transportation, onboard chargers (OBCs) allay concerns about having to often charge the battery packs. This research provides a two-switch topology single-phase non-isolated OBC for electric vehicles. This OBC’s primary benefit is its wide output voltage conversion range and strong input power quality performance. The output voltage of the two-switch converter that is being presented might be both above and below the input voltage peak. This study discusses the analysis, several operating modes of the converter, and design considerations to obtain the wide output voltages. Additionally, a small-signal analysis of the converter in a variety of modes is provided to help with controller design. An AC/DC converter called an interleaved boost cascadedby- buck (IBCBB) power factor correction (PFC) converter has been proposed. This study presents a two-mode control technique with an average current-mode (ACM) control structure employing PI controllers, with automatic mode selection. The prototype has demonstrated a high input power factor of 0.99 and an efficiency of 96%. This charger’s non-isolated topology, which lowers component count and improves efficiency, is one of its key benefits. This design decision reduces size and weight, simplifies the circuitry, and is appropriate for small applications when space is at a premium. Furthermore, the charger’s broad output voltage range guarantees compatibility with a variety of battery types, such as lead-acid, nickel-metal hydride, and lithium-ion batteries.